煤在移动床反应器中气化生产适合甲醇生产装置的合成气的模拟与优化

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2020-01-01 DOI:10.15255/cabeq.2019.1673

M. Shamsi, H. A. Ebrahim, M. Azarhoosh

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引用次数: 0

摘要

本文以匹兹堡8号煤为原料，对移动床反应器内的煤气化过程进行了模拟和优化。采用四阶龙格-库塔法求解质量平衡和能量平衡的微分方程组，并采用非支配排序遗传算法- ii (NSGA-II)方法进行优化。利用模拟方法预测了反应器沿线的固体和气体温度分布以及气体成分。模拟结果与苏格兰韦斯特菲尔德电厂的实验数据进行了比较。此外，还考察了煤氧摩尔比、蒸汽氧摩尔比、进气温度、反应器压力、进气氧摩尔分数等操作参数对合成气产量、合成气中氢与一氧化碳摩尔比和煤转化率的影响。最后，采用NSGA-II法对反应器性能进行了优化，使其在HCMR为2的情况下产生最高的合成气。

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Simulation and Optimization of Coal Gasification in a Moving-bed Reactor to Produce Synthesis Gas Suitable for Methanol Production Unit

This paper presents process simulation and optimization of coal gasification process in a moving-bed reactor using Pittsburgh No. 8 coal as feed. The system of differential equations for the mass and energy balances was solved using 4th-order Runge-Kutta method and optimized by non-dominated sorting genetic algorithm-II (NSGA-II) method. The simulation was used to predict solid and gas temperature profile and gas composition along the reactor. The simulation results were compared successfully with experimental data relevant to Westfield plant in Scotland. In addition, the effect of operating parameters such as coal-to-oxygen molar ratio, steam-to-oxygen molar ratio, inlet gas temperature, reactor pressure, and oxygen mole fraction in inlet air on amount of synthesis gas (syngas) production, hydrogen to carbon monoxide molar ratio (HCMR) in produced syngas, and coal conversion was investigated. Finally, the reactor performance was optimized to produce the highest syngas production with a HCMR of two using NSGA-II method.

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.